What does a KPI meter primarily display?

A KPI meter is designed specifically to provide a snapshot of a single key performance indicator (KPI) at a given moment in time. It typically showcases the current value of that particular KPI, often in relation to set targets or thresholds. This single-focused approach allows users to quickly assess how well the business is performing against that specific metric.

In contrast, other options focus on broader analytical contexts. Trends over time would require a graphical representation showing movement across a timeline, which is not the function of a KPI meter. Overall performance metrics involve a comprehensive view of multiple KPIs or metrics aggregated together, which again extends beyond the singular focus of the KPI meter. Finally, comparative data analysis suggests a side-by-side comparison of different data sets or metrics, which is also outside the singular purpose of a KPI meter. Thus, the emphasis of the KPI meter on displaying data for one specific KPI makes it the most appropriate answer.